Validate that input is in this time format - “HH:MM” [closed]

Answer 1

Function that validates hours, minutes and seconds, according to the desired format:

function validTime($time, $format='H:i:s') {
    $d = DateTime::createFromFormat("Y-m-d $format", "2017-12-01 $time");
    return $d && $d->format($format) == $time;
}

---

How to use:

$valid = validTime("23","H");
$valid = validTime("23:59","H:i");
$valid = validTime("23:59:59","H:i:s");
$valid = validTime("23:59:59");

valid = true

$valid = validTime("25","H");
$valid = validTime("01:60","H:i");
$valid = validTime("01:20:61","H:i:s");
$valid = validTime("01:20:61");

valid = false